Bug 2433482 (CVE-2026-22261)

Summary: CVE-2026-22261 suricata: Suricata: Denial of Service due to XFF handling inefficiencies
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Suricata, a network Intrusion Detection System (IDS), Intrusion Prevention System (IPS), and Network Security Monitoring (NSM) engine. Various inefficiencies in its eXtended Forwarded For (XFF) handling, particularly for alerts not triggered in a transaction, can lead to severe slowdowns. This vulnerability could allow a remote attacker to cause a Denial of Service by sending specially crafted network traffic.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2433652, 2433653    
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Description OSIDB Bzimport 2026-01-27 19:03:05 UTC
Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, various inefficiencies in xff handling, especially for alerts not triggered in a tx, can lead to severe slowdowns. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, disable XFF support in the eve configuration. The setting is disabled by default.